Drying device for preparing casting powder

Abstract

The utility model belongs to the technical field of steel casting, and particularly relates to a drying device for preparing casting powder, which comprises a drying bin, an air flow circulation box is mounted on one side of the drying bin, an air inlet groove, an air outlet groove and a circular receding groove are formed in the air flow circulation box, and a fan is mounted in the air outlet groove. The air inlet groove and the exhaust groove both communicate with the inner space of the drying bin, the inner wall of the circular receding groove is rotationally connected with a rotary carrying disc, and the side wall of the rotary carrying disc is fixedly connected with a plurality of filter screens; air reaching the front of the fan is intercepted and filtered through the multiple filter screens, powdery particle raw materials are prevented from reaching the position of the fan, and therefore the situation that powdery particles continuously impact an impeller, blades and other components of the fan, abrasion is caused, the service life of the fan is shortened, and the operation efficiency of the fan is reduced is avoided; and the resistance of the powdery particle materials to the operation of the fan is reduced, so that the working effect of the whole drying system is prevented from being influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel casting, and particularly relates to a drying device for preparing mold powder. Background Art

[0002] Mold powder is a material placed on the molten steel surface in the mold during continuous steel casting for heat preservation, oxidation prevention, and absorption of non-metallic inclusions. After the batching and mixing are completed, the material may contain a certain amount of moisture. Drying can effectively remove the moisture, ensuring the smooth progress of the subsequent high-temperature melting process and the stability of the mold powder quality;

[0003] Generally, heat is transferred by means of heat conduction, heat convection, or heat radiation, and then hot air is evenly distributed in the drying chamber through a blower or other gas circulation device to exchange heat with the material, promoting moisture evaporation. The mold powder raw materials contain powdery particles such as lime and wollastonite. When the gas circulation device such as a blower is working, some powdery particles are scattered by the airflow. The powdery particles will continuously impact components such as the impeller and blades of the blower, causing wear, reducing the service life and operating efficiency of the blower. The particles attached to the blower will increase the resistance of the blower operation, causing the blower to consume more energy to maintain operation, increasing energy consumption, and thus affecting the working effect of the entire drying system. Content of the Utility Model

[0004] The utility model provides a drying device for preparing mold powder, which has the characteristics of reducing the working interference and damage of the mold powder raw materials to the blower.

[0005] The utility model provides the following technical solution: It includes a drying bin, and an air flow circulation box is installed on one side of the drying bin. An air inlet groove, an air outlet groove, and a circular relief groove are opened on the air flow circulation box. A blower is installed in the air outlet groove. Both the air inlet groove and the air outlet groove are communicated with the internal space of the drying bin. The inner wall of the circular relief groove is rotationally connected with a rotating carrier plate. A plurality of filter meshes are fixedly connected to the side wall of the rotating carrier plate. The filter meshes are located between the air inlet groove and the air outlet groove, and the blower is not in contact with the filter meshes.

[0006] Wherein, a connection hole is opened at the bottom end of the air flow circulation box, and the connection hole is communicated with the internal space of the circular relief groove. A return material through groove is opened in the drying bin, and the connection hole is communicated with the internal space of the return material through groove.

[0007] Wherein, a diversion groove is opened in the air flow circulation box. The air outlet groove is communicated with the internal space of the connection hole through the diversion groove, and the opening of the diversion groove corresponds to the position of the filter mesh.

[0008] Wherein, one side of the rotating carrier plate is fixedly connected with a hollow partition tube and a plurality of partition plates. The hollow partition tube and the partition plates are both rotatably connected to the inner wall of the circular relief groove. The partition plates are located between two adjacent partition plates, and a motor for driving the hollow partition tube is installed in the air flow circulation box.

[0009] Wherein, a guiding cover is fixedly connected to the inner wall of the exhaust groove. The guiding cover is located at the opening position above the diversion groove, and the opening of the guiding cover is opposite to the air flow direction inside the exhaust groove.

[0010] The beneficial effects of the present utility model are as follows: A plurality of filter meshes intercept and filter the air reaching in front of the fan, preventing the powdered granular raw materials from reaching the fan position. Thus, it avoids the situation that the powdered particulate matter continuously impacts components such as the impeller and blades of the fan, causing wear and reducing the service life and operating efficiency of the fan. The plurality of filter meshes are used alternately, reducing the resistance of the powdered granular material to the operation of the fan and reducing the energy consumption of the fan, thereby preventing the impact on the working effect of the entire drying system.

[0011] Parts not involved in this device are the same as the prior art or can be implemented using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic top cross-sectional structure diagram of the present utility model;

[0013] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0014] Figure 3 is an enlarged schematic front cross-sectional structure diagram of the air flow circulation box in the present utility model;

[0015] Figure 4 is a schematic front cross-sectional structure diagram of the present utility model;

[0016] Figure 5 is an enlarged schematic front view structure diagram of components such as the rotating carrier plate in the present utility model.

[0017] In the figure: 1, drying bin; 11, return material through groove; 2, air flow circulation box; 21, air inlet groove; 22, exhaust groove; 221, guiding cover; 23, fan; 24, circular relief groove; 25, connection hole; 26, diversion groove; 3, rotating carrier plate; 31, filter mesh; 32, hollow partition tube; 33, partition plate; 34, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Please refer to Figures 1-5, the present utility model provides the following technical solutions: It includes a drying bin 1, and an air flow circulation box 2 is installed on one side of the drying bin 1. An air inlet groove 21, an air outlet groove 22, and a circular relief groove 24 are provided on the air flow circulation box 2. A fan 23 is installed in the air outlet groove 22. Both the air inlet groove 21 and the air outlet groove 22 are communicated with the internal space of the drying bin 1. The inner wall of the circular relief groove 24 is rotatably connected to a rotating carrier plate 3. A plurality of filter meshes 31 are fixedly connected to the side wall of the rotating carrier plate 3. The filter meshes 31 are located between the air inlet groove 21 and the air outlet groove 22, and the fan 23 is not in contact with the filter meshes 31.

[0019] In this implementation scheme: The drying bin 1 loads and dries the mold powder raw materials. The air flow circulation box 2 is located at the upper position on one side of the drying bin 1. The fan 23 inside the air flow circulation box 2 evenly distributes and guides the air flow inside the drying bin 1, so that the hot air flow can be distributed at various positions inside the drying bin 1, increasing the drying effect and efficiency. The air flow circulation box 2 realizes air intake and exhaust through the air inlet groove 21 and the air outlet groove 22. The air inlet groove 21 extracts the air inside the drying bin 1, and the air outlet groove 22 discharges the air into the drying bin 1, so as to form an air flow circulation inside the drying bin 1. The circular relief groove 24 accommodates the rotating carrier plate 3. The rotating carrier plate 3 supports and rotates to drive a plurality of filter meshes 31. The air inlet groove 21 is communicated with the internal space of the circular relief groove 24. The air entering the internal space of the circular relief groove 24 passes through the filter meshes 31 and enters the internal of the air outlet groove 22. The air outlet groove 22 drives and guides the air through the fan 23 inside to form an air flow. When the air passes through the filter meshes 31, the floating powdery granular raw materials reach the position of the filter meshes 31 along with the air flow. The filter meshes 31 intercept and filter the powdery granular raw materials, preventing the powdery granular raw materials from reaching the position of the fan 23, thus avoiding the situation that the powdery particles continuously impact components such as the impeller and blades of the fan 23, causing wear and reducing the service life and operating efficiency of the fan 23. A plurality of filter meshes 31 are used alternately, reducing the resistance of the powdery granular materials to the operation of the fan 23 and reducing the energy consumption of the fan 23, so as to prevent affecting the working effect of the entire drying system. The air after being filtered re-enters the drying bin 1 through the air outlet groove 22, and the air inlet groove 21 and the air outlet groove 22 can guide the air flow obliquely downward, so that the air flow can realize spiral rotation inside the drying bin 1, increasing the effect of air flow diffusion.

[0020] A connection hole 25 is formed at the bottom end of the air flow circulation box 2. The connection hole 25 is communicated with the internal space of the circular relief groove 24. A return material through groove 11 is formed in the drying bin 1. The connection hole 25 is communicated with the internal space of the return material through groove 11. The connection hole 25 is located below the circular relief groove 24. When the rotating carrier plate 3 drives a plurality of filter meshes 31 to rotate, the filter meshes 31 drive the intercepted and filtered powdery particles to rotate downward, and the powdery particles fall downward into the space of the connection hole 25. The connection hole 25 discharges the powdery particles into the return material through groove 11, and the return material through groove 11 re-feeds the powdery particles into the drying bin 1, avoiding the waste of powdery particles.

[0021] A diversion groove 26 is formed in the air flow circulation box 2. The exhaust groove 22 is communicated with the internal space of the connection hole 25 through the diversion groove 26. The opening of the diversion groove 26 corresponds to the position of the filter mesh 31. The diversion groove 26 is communicated with the internal space of the exhaust groove 22 through the upper opening. The fan 23 pushes the air flow into the exhaust groove 22. The diversion groove 26 diverts and guides the air flow inside the exhaust groove 22, so that the air flow can pass through the diversion groove 26 and be discharged from the lower opening. The air flow blows the back of the filter mesh 31, thereby realizing the effect of back-blowing the filter mesh 31, and further enabling the filter mesh 31 to be cleaned, avoiding the blockage of the filter mesh 31 during subsequent use.

[0022] One side of the rotating carrier plate 3 is fixedly connected with a hollow partition pipe 32 and a plurality of partition plates 33. The hollow partition pipe 32 and the partition plates 33 are both rotatably connected to the inner wall of the circular relief groove 24. The partition plates 33 are located between adjacent partition plates 33. A motor 34 for driving the hollow partition pipe 32 is installed in the air flow circulation box 2. The hollow partition pipe 32 and the partition plates 33 separately partition a plurality of filter meshes 31, so that the plurality of filter meshes 31 can work separately, preventing the air flow from flowing through in the circular relief groove 24, ensuring the stability of the air flow entering the exhaust groove 22. The motor 34 drives the hollow partition pipe 32 to rotate, and the hollow partition pipe 32 drives the rotating carrier plate 3 to rotate.

[0023] A guiding cover 221 is fixedly connected to the inner wall of the exhaust groove 22. The guiding cover 221 is located at the upper opening position of the diversion groove 26. The opening of the guiding cover 221 is opposite to the internal air flow direction of the exhaust groove 22. The guiding cover 221 shields the upper opening of the diversion groove 26. When the air flow flows inside the exhaust groove 22, the opening of the guiding cover 221 faces the air flow, facilitating the air flow to enter the guiding cover 221, and then the air flow enters the diversion groove 26.

[0024] The working principle and use process of the utility model are as follows: when the device is used, the fan 23 is controlled to start guiding and driving the airflow, and the extraction force generated by the fan 23 extracts the air inside the drying chamber 1 through the air inlet slot 21, and the airflow passes through the air inlet slot 21 to reach the position of the filter screen 31, and the filter screen 31 intercepts and filters the powdery granular raw materials to prevent the powdery granular raw materials from reaching the position of the fan 23, thereby avoiding the powdery particles from constantly impacting the impeller, blades and other parts of the fan 23, causing wear and tear, and reducing the service life and operating efficiency of the fan 23. The motor 34 drives the middle space retaining tube 32 to rotate, and the middle space retaining tube 32 drives the rotating carrier The disk 3 rotates, and the rotating carrier 3 drives several filters 31 and several partition plates 33 to rotate synchronously. The next filter 31 rotates to the docking position with the exhaust slot 22 to prevent the single filter 31 from being blocked due to long-term use. The fan 23 pushes the airflow into the exhaust slot 22, and the diverter slot 26 diverts and guides the airflow inside the exhaust slot 22 so that the airflow can pass through the diverter slot 26 and be discharged from the lower opening. The airflow blows the back of the filter 31, thereby achieving the effect of backblowing the filter 31, so that the filter 31 can be cleaned and the filter 31 can be prevented from being blocked in subsequent use.

Claims

1. A drying device for preparing mold slag, comprising a drying chamber (1), characterized in that: An air circulation box (2) is installed on one side of the drying bin (1), and an air intake groove (21), an air exhaust groove (22) and a circular clearance groove (24) are provided on the air circulation box (2), and a fan (23) is installed in the exhaust groove (22). The air intake groove (21) and the exhaust groove (22) are both connected to the internal space of the drying bin (1), and the inner wall of the circular clearance groove (24) is rotatably connected to a rotating carrier (3), and a plurality of filter screens (31) are fixedly connected to the side wall of the rotating carrier (3), and the filter screens (31) are located between the air intake groove (21) and the exhaust groove (22), and the fan (23) does not contact the filter screens (31).

2. A drying device for preparing mold slag according to claim 1, characterized in that: A connecting hole (25) is provided at the bottom end of the air circulation box (2), and the connecting hole (25) is connected to the internal space of the circular clearance groove (24); a return material groove (11) is provided in the drying chamber (1), and the connecting hole (25) is connected to the internal space of the return material groove (11).

3. A drying device for preparing mold slag according to claim 2, characterized in that: A diverter groove (26) is provided in the airflow circulation box (2), the exhaust groove (22) is connected to the internal space of the connecting hole (25) through the diverter groove (26), and the opening of the diverter groove (26) corresponds to the position of the filter screen (31).

4. A drying device for preparing mold slag according to claim 1, characterized in that: A central space baffle tube (32) and a plurality of partition plates (33) are fixedly connected to one side of the rotating carrier (3); the central space baffle tube (32) and the partition plates (33) are both rotatably connected to the inner wall of the circular clearance groove (24); the partition plate (33) is located between two adjacent partition plates (33); and a motor (34) for driving the central space baffle tube (32) is installed in the airflow circulation box (2).

5. A drying device for preparing mold slag according to claim 3, characterized in that: A guide cover (221) is fixedly connected to the inner wall of the exhaust groove (22), the guide cover (221) is located at an opening above the diverter groove (26), and the opening of the guide cover (221) is opposite to the air flow direction inside the exhaust groove (22).

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